1

GND

6

BOOT

2

SW

5

EN

3

VIN

4

FB

3

TPS54302

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SLVSDG6A – MAY 2016 – REVISED MAY 2016

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(1)

O = Output; I = Input

5 Pin Configuration and Functions

DDC Package

6-Pin SOT-23

Top View

Pin Functions

PIN

DESCRIPTION

NAME

NO.

BOOT

6

O

Supply input for the high-side NFET gate drive circuit. Connect a 0.1-

μF capacitor between BOOT and

SW pins.

EN

5

I

This pin is the enable pin. Float the EN pin to enable.

FB

4

I

Converter feedback input. Connect to output voltage with feedback resistor divider.

GND

1

–

Ground pin Source terminal of low-side power NFET as well as the ground terminal for controller

circuit. Connect sensitive VFB to this GND at a single point.

SW

2

O

Switch node connection between high-side NFET and low-side NFET.

VIN

3

–

Input voltage supply pin. The drain terminal of high-side power NFET.